Improved planing-chuck



vlowing is a full, clear and exact Q@initrd (ltere AUGUSTUS' NEWELL AND -WILIIIAM IIM, OF CHICAGO, ILLINOIS.

Leiters Patent/No'. 1102,51@ dant/ql Mafy 3, 1870.

IMPROVED PLANING'r-CHU'CK.

f The Schedule referred to in these Lettersy Patent and making part of the same.

To allwhom it mag/concern:

Be it known that we, AUGUSTUS NnwELL and WILLIAM PIM, of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Ilaning-Chuck; and we do hereby declarethatthe foldescription thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification, in whichy Figure 1 represents a plan, or top view, of our improved chuck.

Figure 2 is a vertical longitudinal section of the same, taken on the plane of the line x x, fig. 1.

Figure 3 is avertical transverse section of the same, taken odgthe plane of the line y y, ig..l.

Similar letters of reference indicate corresponding parts.

This invention relates to a newfchuck or vise, to be used on a lathe or planer, its chiefobject being to hold the work perfectly true.

The invention c'onsists in the arrangement and combination of the leading-screw and swivel-bed, with a T-bolt, a movable jaw, all parts operating so that the article to be plaucd' cannotbe upset, but will be held perfectly true, as hereinafter more fully set forth.

A, in the drawing, represents the swivel-bed of the chuck, which is arranged on a planer. t

In this hed is swiveled the leader-screw B, which works in a groove of the bed, as shown.

Upon the screw is tted a nut, a, which can be movedlongitudinally, but not revolved in the groove of the bed, it filling the said groove 'transversely in such manner that it cannot revolve in the same.

l From the nut a projects a pin, b, which has a screwthread at its upper part.

The pin b and nut a, together,. constitute the T- bolt C, upon which the movable jaw D is swiveled, the said jaw being held down upon the face of the bed by'means of a nut, c, that is screwed upon the pin Z, as shown.

The fixed jaw E projects from, and is firmly secured to, or formed on, the bed A, at right anglesI to the screw B, as shown in g. 1.

By means ofthe screw B the jaw D can be adjusted at any suitable distance from the jaw E, and, at the saine time, the jaw D can turn on the pin b, so as to hold wedge-shaped aswell as parallel-faced articles.

By straining the nut c, the jaw D will be clamped in such manner that it cannot spring the least from the bed. The work will, therefore, he held quite truc,

and will be planed accordingly.

In the ordinary chucks, whcrra 'piece is to be fastened, the set-screws bearing against the movable jaw at some point above thebed, spring the work slightly from the bed at one side, and cause the operation to be more or less untrue.' By our invention this oh- ,jection is entirely overcome.

Having thus described our invention,

We claim as new and desire to secure by Lcttcrs Patent- The self-adjusting jaw D, carrying-bolt C, and clamping-nut c, combined with bed A and screw B, all arranged and relatively constructed as and for the purpose described. f

'AUGUSTUS NEWELL.

WILLIAM IIM.

Witnesses: I

HENRY F. TALIso'I, H. 1t. MOORE. 

